Spectacle temple



Noir. 6, 1928.

J. W. WELSH SPECTACLE TEMPLE med Deo. 29, 1925 Patented Nov. 6, 1928.

UNITED STATES PATENT OFFICE.

JAMES W. WELSH, OF PROVIDENCE, RHODE ISLAND, ASSIG'NOB, BY MESNE.ASSIGNQ MENTS, TO BAUSCH AND LOMB CORPORATION OF NEW YORK.

OPTICAL` COMPANY, OF ROCHESTER, NEW YORK, A

SPECTACLE TEMPLE.

Application filed December 29, 1923. Serial No. 683,437.

The pres-ent invention relates to spectacle temples, and moreparticularly to flexible or cable temples comprising non-metallicmaterial, like zylonite.

In some types of cable temples of the abovedescribed character, the earhook comprises a non-metallic tube cut into t-he form of a helix. Inother types, the non-metallic material is constituted of one or morenon-metallic strands wound into helical form. In both types, thenon-metallic material is mounted over a metal reinforcing rod.

The objectof the present invention isl to provide an improved spectacletemple of t-he above-described character, and with this end in view, theinvention consist-s of the improved spectacle temple hereinafterdescribed, illustrated in the accompanying drawings and defined in theappended claims.

In the accompanying drawings, Fig. l is an elevation of a spectacletemple constructed according to a preferred embodiment of the presentinvention; Fig. 2 is a longitudinal section of a fragment of the same;Figs. 3, 4 and 5 are similar sections of modifications; Fig. 6 is asection taken upon the line 6-6 of Fig. 3, looking in the direction ofthe arrows; Fig. 7 is a fragmentary elevation, partly in section,illustrating a step in the manufacture of the preferred temple shown inFigs. l and 2; tive detail views of parts of the preferred temple; andFig. l() is a view of a further modification.

For the purpose of illustrating the invention, a preferred temple isshown comprising a nonsmetallic tube 2 the forward portion 4 of which isprovided with a hinge member l2, whereby the temple may be hinged to aspectacle frame. The rear portion of the tube 2 is curved into the formof an ear hook, and is cut into the form of a helix, as shown at 8, torender the ear hook flexible. A rein-ford ing rod or wire l() is mountedin the bore 34 of the tube. The reinforcing rod l() is itselfillustrated as of the cable type such as is used for ordinary metalspectacle temples, but the invention is not restricted to any particulartype of reinforcing rod. The rear end or tip 6 of the helically cut tubeis left uncut, but is provided with a counterbored recess 42 of largerdiameter than the bore 34 of the tube. The rod 10 is provided with aflat-tened Figs. 8 and 9 are perspec.

terminal enlargement 44 that is seated in the recess 42. Owing to theresilient nature of the non-metallic material, the parts of the helicalelement 8 can be very snugly pulled together by this construction. Awasher 48, shown as a split ring, is mounted on the reinforcing rod l()and seated in the counterbored recess 42 between the enlargement 44 andthe end wall 50 of the recess 42 to prevent t-he fiattened enlargement44 biting into, and thereby weakening, the non-metallic material. rlheopening in the. end wall 50 is a continuation `of the bore 34 and isnaturally of smaller diameter than the diameter of the enlarged portionof the. recess. The end of the rod 10 entends through the end wall 50and washer and the enlargement 44 engages the washer to lock the tube 2on the rod l0. A plug 46 is mounted in the recess 42 to conceal theenlargement 44.

The flattened enlargement 44 would render it somewhat difficult to mountthe reinforcing rod 10 in the bore 34 of the tube 2, particularly if thehinge member 12 is integral with, or soldered to, the reinforcing rod.It is therefore preferred to flatten the end of the reinforcing rodafter the rod has previously been mounted in the bore 34. This may beeffected by means of dies 52 and 54, or in any other desired orpreferred way, after the coil 8 has first been compressed longitudinallyof the rod l0, as illustrated in Fig. 7. Prior to the action of thedies, the end of the rod 10 is first upset, very much as is illustratedin Fig. 5, so as to obtain a larger terminal 44. The coil 8 is thenallowed to resume its normal shape, thereby bringing the enlargement 44into the recess 42, the tube and the rod becoming` thus secured togetherin assembled relation. In some cases, and if the enlargement 44 isproperly shaped, the enlargement 44 may form its own recess 42 when thecoil 8 is released to resume its normal shape.

According to the modification of Fig. 3, the terminal of the reinforcingrod is threaded at 56, and a nut 58 is threaded thereover to therequired degree of tightness. Or, the end of the. reinforcing rod may beprovided with a small knob 60, and a washer 62 may be interposed betweenthe knob and the wall 5() of the recess 42, as shown in Fig. 4. In theconstruction of Fig. 4, the rod lO must be ingv of the bal-l head 64eisv a matter that will n present no diiicult-ies to persons skilled inthe art. Y A coil spring` 66 may replace the Washer 48 of Figs. 2, l and9, but it should 'not .be so strong as to cause theV ear hook 8 tostraighten out. Y l

According to the preferred method of man-` u't'a'cture, the ear hook-8isn-ot shapeduntil a'fterthe parts have been* assembled as beforedescribed, but further description isunneces'- sary, because rhaving noparticular bearing uponlv the feature present invention. e u

It Willbe understood `thatvthe intention is` not restricted tothe'ezn'ct embodiments thereof kthat are Aill'ustiated" and; describedhei-ein,r

y but that man;T other inodiiications Will read# ily occurtoper'sonsskilled in the art, andell` suoli are consideredf'to'"fall'within thespirit and scope or the inventioinns` defined inthe appendedclaims. y

Vsll'iat isclaimed' is: l f

r`l; A spectacle temple comprising; an ele-4 nient inthe formoialie'lima terniinal mein.- ber provi'ded With a counterbored recesshavey ing" an end Wall providedA with an opening communicating with theboiefo'f the helix', theY opening ijn'v the endl Wall1V beingJ smallerin o cressdiniensien than the enlarged portion of theeounterbored"recess, and 'aro'd inthe'helixr haringen enlarged elementseatedfi'ntheenf lar'gedportionof the counterbofredf recess; v y 2. Aspectacle 'teniple comprising: aA tu'be constituted of resilient,non-metal -in'aterial,`

aportion of the' tube' beingfcut in'totlieforino a' helix; and an 'endportion' of the tubebe-` ing provided With an enlarged recess, and

rod in the helix having an enl'a'rged'teiinina'l elementv seated in there'cess,therecessbeiiig` provided' WithV a plug to conceal theAenlarge'd element.

spectacle templel comprising anelementin the form of a lieli'x,' aterminall inem-y ber having' an' enlarged recess communicatingy with'the bore' of the helix, and aired" inthe' s of lnovel-tyconstituti-ngtheV provided'with an enlarged recess'vhawfing between theenlargement-and the end Wall ot the recess; l y I y rn -5. A spectacletemple as defined 1n claim 3 in which the enlarged portion is flattened.

6. A spectacle temple as defined in claim 3 lin which a split `ringismounted upon the rod between the enlargement and the end wall of therecess'. I `Y 7. A' spectacle temple 'formed' dit a uj'r'e covered withnon-metallic tube,r tl're" end oi` the tube being` counterbored, aWasher seated' inthe couifit'e'rbore andl theeiid oit' the W Le extending through t-'he washerr` and having an enlargement engaging thewasher to lock the tube oir the' Wire'.

8. A `spectacle temple 'formedof a Wire covered `With non-metallictube','the earengaging portion of the'tube being' i-n helical form, theendetI the't'ube being c'ouiiteibored,=

a Washer seated inthe counterb'or'e, and the end of the Wireextei'idmgthrongh the Washer" and having *anA enlargement 'engaging'tl'i'ey Washer' to lock the lhelical in'compressed'po'sition.h v l n 9iA spectacle temple Comprising' anfelfe'L ment in the term of alieli-X"and having integral tlie'rewith :anV endportio'i'ry providedf with an?renlarged l recess 'comni'u'iii'catingf wf ith 'the boref'f thev hel-ix,and?zrrlidj in" the hel-ix havek inga'n enlarged element seated ,in therecess.

10; A sp'ect'acletenip'l'efcomprising nonlinetallic materialfadapted tobe hinged at the forward end,A the re'ai portioi'i of the' non-metallicmateriel being flexible coniparedto'the o'rwarct portion andhavjin'ganend porti' end Wallprovided with .anopening'g aiida iieible metalreidF in itl 1e" rear portion and 'ex'- tending'l througli'thel opening`and liavnig'afn enlarged terminar element seaedin there CSSS.

In testimony'Whereol have hereunto subscribed my name this Qthfday ofDecember,l

1923; JAL'IESWV.

